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RESEARCH PAPERS

Analysis and Optimization of Thermal Stratification and Self-Pressurization Effects in Liquid Hydrogen Storage Systems—Part 1: Model Development

[+] Author and Article Information
S. Gursu, T. N. Veziroglu

Clean Energy Research Institute, University of Miami, Coral Gables, FL 33124

S. A. Sherif

Department of Mechanical Engineering, University of Florida, Gainesville, FL 32611

J. W. Sheffield

Department of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri, Rolla, MO 65401

J. Energy Resour. Technol 115(3), 221-227 (Sep 01, 1993) (7 pages) doi:10.1115/1.2905997 History: Received July 26, 1991; Revised February 23, 1993; Online April 16, 2008

Abstract

This paper reports on analyses and optimization studies of problems associated with liquid hydrogen thermal stratification and self-pressurization in cryogenic vessels. Three different pressure rise models were employed to calculate the self-pressurization and boil-off rates. These are a homogeneous model, a surface-evaporation model, and a thermal stratification model. The first two models are based on the assumption that no temperature gradients exist in the tank, while the thermal stratification model takes the temperature distribution into account. Employing the thermal stratification model, temperature gradients and their effect on the pressure rise rates in liquid hydrogen tanks are analyzed.

Copyright © 1993 by The American Society of Mechanical Engineers
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